Which of the following are not true of HTML elements? O An element is surrounded by tags O An element is composed of a container and its content O An element encloses a tag O All of the above. O None of the above. All modern browsers support HTML5 O True False The lowest level of style is an external style sheet True O False The only required attribute of an HTML form is an input True False A style is specified for a tag by the values of its popsicles o True O False